• Mokka Harish
• Pilla Devi Prasanna

Cryptography [3] is the study of information encryption and decryption. Attending the process of hiding information from unauthorised users accessing it is due to the need to secure information from ancient times till the present. The current technology allows for the creation of ciphers using both symmetric and asymmetric cryptography techniques. The symmetric approach encrypts a plain text at the sender's end to produce a cipher text, which is then decoded at the receiver's end to produce the original plain text. The suggested method makes advantage of a property that fuses the Hill Cipher and Affine Cipher. The third key, which is a matrix, is created throughout the key generation process. The third key matrix format is utilised to convert plaintext to cipher text, and modulo formulation is used to each text form to increase information security and create incredibly effective cipher systems.

Affine Cipher And Hill Cipher, Encryption And Decryption, Three Key-Based Cryptography, Matrix Format.

"HILL CIPHER AND AFFINE CIPHER SYMMETRIC KEY METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 7, page no.i42-i50, July-2024, Available :http://www.jetir.org/papers/JETIR2407806.pdf

"HILL CIPHER AND AFFINE CIPHER SYMMETRIC KEY METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 7, page no. ppi42-i50, July-2024, Available at : http://www.jetir.org/papers/JETIR2407806.pdf